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WorksheetsLiving Things in the Biosphere
Total questions: 19
Worksheet time: 32mins
Which of the following is a compound that is important for life processes in cells?
gold
water
nitrogen
hydrogen
Katya listed major questions that scientists try to answer when they classify organisms. Her list included the following questions: How many living things are there? What are the characteristics that define living things? What additional question would be best for Katya to add to her list about classification?
How are living things related?
How do living things get energy?
What do living things need to survive?
Where do living things make their home?
Which of the following statements correctly identifies the general characteristics of organisms in a domain?
Domain Eukarya includes single-celled organisms that lack nuclei.
Domain Bacteria includes multicellular organisms that make their own food.
Domain Archaea includes single-celled organisms that can be found in hot springs and thermal vents.
Domain Protista includes single-celled and simple multicellular organisms that have plantlike or animal-like characteristics.
During a laboratory project, Sunita and William use a dichotomous key to identify different insects. The dichotomous key and one of the insects they need to identify are shown in the following figure. In what step of the dichotomous key will Sunita and William identify the insect?
step 1
step 2
step 5
step 6
During an experiment, India examines prepared slides that her teacher has given her. One of the slides shows a single-celled organism that lives in soil. It has a nucleus and several internal structures. To which domain does the organism likely belong?
Which of the following statements correctly describes a kingdom of Domain Eukarya?
Kingdom Protista includes single-celled organisms that lack nuclei.
Kingdom Plantae includes multicellular organisms that can move independently.
Kingdom Animalia includes multicellular organisms that make their own food.
Kingdom Fungi includes organisms that get energy by decomposing materials in their environment.
A science class is studying an organism. Using a microscope, the class observed that the cells have nuclei and chloroplasts. In which domain would the organism most likely be classified?
Which of the following methods would be least helpful to a scientist in determining the relatedness of two types of animals?
comparing the diets of the two animals
comparing the DNA of the two animals
comparing the physical characteristics of the two animals
comparing the development patterns of the two animals
A branching diagram uses shared characteristics to classify organisms. On a branching diagram that compares the major kingdoms of Domain Eukarya, what label might appear to differentiate animals from organisms in the other kingdoms?
single-celled, make own food
multicellular, make own food
multicellular, move independently
release digestive juices into surroundings
Viruses, bacteria, fungi, and parasites can all be pathogens that may pose a threat to human health. What is a pathogen?
Viruses are different than other infectious agents. How are viruses different from the others?
Kate read about a hospital in the 19th century that implemented a new policy where doctors had to wash their hands before they could work with a patient. Until then, doctors has washed their hands after working with patients. As a result, the infant survival rate increased. For what change in science, or scientific discovery, could this have been evidence?
soap
pathogens
antibiotics
blood types
There are many ways to think about different organisms, but scientists have a classification system based on the traits of each organism. By answering the questions in the dichotomous key, scientists can tell whether this organism is a dragonfly or a housefly. What characteristic of scientists does this best represent?
artistic
curious
logical
opinionated
Scientists use models to help them understand how the natural world operates. These models can take different forms. However, all models have one limitation. What is that limitation?
Fish, snails, zebras, and fruit flies are all organisms, and they look very different from each other. All organisms can be classified into six kingdoms: Eubacteria, Archaea, Protist, Fungus, Plant, and Animal. Although the organisms listed above look very different, they are all members of the same kingdom. Which kingdom do they belong to, and what is a characteristic shared by all organisms in this kingdom?
Animal; All animals are multicellular.
Eubacteria; All eubacteria have eukaryotic cells.
Animal; All animals live in a marine environment.
Protist; All protists can move around in their environment.
Bats and dolphins are grouped in the same class, Mammalia, as lions. Which of the following statements about bats, dolphins, and lions is true?
A student uses a microscope to view six samples, as shown in the diagram below. Which of the following statements is incorrect given the students observations?
A biologist studies living or once-living organisms. When a biologist thinks he has discovered a new plant, he classifies it. What method is he most likely to use to in his pursuit of scientific explanation?
A scientist is examining an unknown infectious agent. The organism is a single-celled, free-moving autotroph with genetic material and no cell wall. What type of infectious agent is the scientist most likely studying?
